package innerclasses;
interface Game{
    boolean move();
}
interface GameFactory{
    Game getGame();
}
class Checkers implements Game{
    private Checkers(){}
    private int moves=0;
    private static final int MOVES=3;

    @Override
    public boolean move() {
        System.out.println("Checkers move"+moves);
        return ++moves!=MOVES;
    }
    public static GameFactory factory=new GameFactory() {
        @Override
        public Game getGame() {
            return new Checkers();
        }
    };
}
class Chess implements Game{
    private Chess(){}
    private int moves=0;
    private static final int MOVES=4;
    public boolean move(){
        System.out.println("Chess move"+moves);
        return ++moves!=MOVES;
    }
    public static GameFactory factory=new GameFactory() {
        @Override
        public Game getGame() {
            return new Chess();
        }
    };
}
public class Games{
    public static void playGame(GameFactory factory){
        Game s=factory.getGame();
        while(s.move())
            ;
    }
    public static void main(String[] args){
        playGame(Checkers.factory);
        playGame(Chess.factory);
    }
}
